Epson FX-870 User Manual page 179

RAM
Random Access Memory. The portion of the printer's memory used
as a buffer and for storing user-defined characters. All data stored in
RAM is lost when the printer is turned off.
reset
To return a printer to its defaults by sending a command, an INIT
signal, or by turning the printer off and then back on.
self test
A method for checking the operation of the printer. When you run
the self test, the printer prints the characters stored in its ROM.
software program
A program that helps you carry out a particular task, such as word
processing or financial planning.
subscript
Printing in which each character is printed at about two-thirds the
normal height in the lower part of the character space.
superscript
Printing in which each character is printed at about two-thirds the
normal height in the upper part of the character space.
tear off
A paper feed operation that automatically feeds the perforation of
continuous paper to the tear-off position and then feeds the paper
back to the loading position.
Glossary GL-5